Method of attaching air-chambers to pumps



UNITED STATES PATENT OFFICE.

CHARLES N. LEWIS, OF SENECA FALLS, NEW YORK, ASSIGNOR TO GEORGE C. KING, OF

SENECA FALLS, NEW YORK.

METHOD OF ATTACHING .AIR-CHAMBERS T0 PUMPS.

Specification of Letters Patent No. 17,653, dated .Tune 23, 1857.

To all 'whom 'it may concern:

Be it known that I, CHARLES N. LEWIS, of Seneca Falls, in the county of Seneca and State of New York, have invented a new and useful Improvement in Pumps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a vertical section of my improvement; the plane of section passing through the center. Fig. 2 is a plan or top view of ditto; the rotating chamber at the upper part of the pump being removed.

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to an improvement in the construction of single acting cast iron force pumps, whereby the construction of such pumps is much simplified, rendered substantial, not liable to get out of repair, and, when necessary, may be repaired with greater facility than the pumps hitherto constructed.

The invention consists in securing the air chamber at the upper part of the pump, to the pump cylinder by means of a peculiar arrangement of the stuiling box, and fol-` lower, as will be hereinafter fully shown and described.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents the pump cylinder, the lower end of which is screwed into a proper base B. The upper end of the cylinder A has a shoulder (a) formed on it, on which shoulder the lower end of the air chamber C rests, an annular strip of leather (b) being interposed between the cylinder A, and air chamber C, said leather serving as packing.

D represents the spout which is attached to the air-chamber C. The upper end of the l cylinder A has a ianch (c) formed on it, said flanch projecting inward a suitable distance, and having two recesses (d) (d) formed in it at o posite sides, as shown clearly in Fig. 2. Tfle upper end of the cylinder A is of flaring form as shown clearly at (c) Fig. 1.

E represents the piston which is attached to the rod F as usual and G is the stuffing box, the lower end of which has two flanches (f) projecting from it at op osite sides. These iianches are passed througli the recesses (d) (d) in the anch (c) and turned so as to be out of line with the recesses. The stuffing box is provided internally with a screwthread (g) as usual, and a follower H is fitted within it. The upper end of the follower has a cu (h) formed on it, and at the outer side an lower part of the cu (h) a shoulder (i) is formed, said shoulder Bearing on an annualr led e (j) on the upper part of the air-chamber C, the follower H passing through the upper end of said chamber. An annular strip of leather (al) is interposed between the shoulder (i) and ledge (j), said leather serving as acking.

The piston rod F works through the stuffing box and follower as usual and therod is attached to the lever I which has its fulcrum at the upper end of an arm (7c) the lower end of which is pivoted to a projection (Z) on the cylinder (a) as shown at (m).

From the above description of arts it will be seen that by screwing the follower H in the stuffing box G, the air-chamber C is permanently secured to the cylinder A, and the chamber may be turned so that the spout D may be brought in any desired position. By this improvement the several parts of the pump are all connected in the most simple manner possible, and in case repairs are needed the air-chamber C may be detached from the cylinder A with the greatest facility, and the internal parts of the pump rendered accessible.

I do not claim arranging the air-chamber C so that it may be turned on the cylinder and the spout D brought in any desired position, for that has been previously done; but

What I claim as new and desire to secure by Letters Patent, is:

Connecting the air-chamber C with the cylinder A by means of the stuiiing box G and follower H, applied to the pump, and arranged relatively with the several parts s slliown and described forthe purpose set ort CHARLES N. LEWIS. 

